# Find render-blocking resources

List all resources that are blocking rendering.

> It's currently Chromium only

#### Snippet

```js copy
function RenderBlocking({
  startTime,
  duration,
  responseEnd,
  name,
  initiatorType,
}) {
  this.startTime = startTime;
  this.duration = duration;
  this.responseEnd = responseEnd;
  this.name = name;
  this.initiatorType = initiatorType;
}

function findRenderBlockingResources() {
  return window.performance
    .getEntriesByType("resource")
    .filter(({ renderBlockingStatus }) => renderBlockingStatus === "blocking")
    .map(
      ({ startTime, duration, responseEnd, name, initiatorType }) =>
        new RenderBlocking({
          startTime,
          duration,
          responseEnd,
          name,
          initiatorType,
        }),
    );
}

console.table(findRenderBlockingResources());
```
